Proof (2005) Gwyneth Paltrow Catherine Jake Gyllenhaal Hal Anthony Hopkins Robert Hope Davis Claire Gary Houston Professor Barrow Danny McCarthy (II) Cop Roshan Seth Directed by: John Madden Produced by: James D. Stern, Bob Weinstein, Harvey Weinstein On the eve of her twenty-seventh birthday, Catherine, a young woman who has spent years caring for her brilliant but unstable father, a mathematical genius named Robert, must deal not only with the arrival of her estranged sister, Claire, but also with the attentions of Hal, a former student of her father's who hopes to find valuable work in the 103 notebooks of Robert's. As Catherine confronts Hal's affections and Claire's overbearing plans for her life, she struggles to solve the most perplexing problem of all: How much of her father's madness--or genius --will she inherit? ========== The daughter of a brilliant but mentally disturbed mathematician (recently deceased) tries to come to grips with her possible inheritance: his insanity. Complicating matters are one of her father's ex-students who wants to search through his papers and her estranged sister who shows up to help settle his affairs. ========== In Chicago, on the day of her twenty-seventh birthday, Catherine receives her sister Claire from New York for the funeral of their father Robert, who passed away a couple of days before. Robert was a brilliant mathematician that became bughouse, and Catherine had lived with him for the last five years, inclusive quitting her studies in the faculty, and she is concerned about having inherited his insanity. The mathematician of the University of Chicago, Hal, is making a research in Robert's notebooks, trying to find any brilliant proof that Robert might have produced in one moment of lucidity. When Hal has one nightstand with Catherine, she gives a notebook to him with the development of a unique mathematics theory that Catherine claims that she developed. Hal and Claire do not believe on her, until the truth is disclosed.